/*
*   有两种写法来描述线程的入口，第一种是使用Thread的run来描述入口
*   第二种是是使用Runnable interface 来描述线程入口
* */
class MyRunnable implements Runnable {
    @Override
    public void run() {
        while (true) {
            System.out.println("hello ");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

public class ThreadDemo2 {
    public static void main(String[] args) {
        MyRunnable runnable = new MyRunnable();
        Thread t = new Thread(runnable);
        t.start();

        while (true) {
            System.out.println("hello main");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}
